The two met at a dinner for Louis Vuitton in Los Angeles. "We were really good friends for a long time before we started dating," Kerr told The Sydney Morning Herald.

In 2007, Kerr was the first Australian to become a Victoria's Secret Angel and was among the world's highest-paid models. Now she's working on creative projects like jewelry lines and just launched a handbag collection in Asia.

Kerr, 34, was once married to Orlando Bloom and has a son, Flynn. Spiegel had to wait at least six months to meet him, per Kerr and Bloom's rules, but "things are going well," Kerr said. "We're just a modern family now."

Spiegel stays busy as the CEO and cofounder of Snap, the parent company of the photo-messaging app Snapchat. It has been a busy year for Spiegel, who took Snap public in March.

AP Photo/Jae C. Hong

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Even though the two stay busy with work, Kerr says Spiegel loves to come home and chill with the family. "He's 25, but he acts like he's 50. He's not out partying," Kerr once said. "He goes to work in Venice [Beach, in LA]. He comes home. We don't go out. We'd rather be at home and have dinner, go to bed early."

In May 2016, the couple went all-in and purchased a 7,100-square-foot house for $12 million in the Brentwood neighborhood of LA.

While their relationship is mostly private, the duo makes some high-profile appearances like a dinner at the White House last year with President Barack Obama.

Reuters

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Mostly, though, the pair loves hanging out together.

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In July, Kerr announced their engagement by using Bitmojis from Bitstrips — a company Snap had just bought for $100 million — to show that Spiegel had popped the question. 'I said yes!!!' Kerr said in her Instagram post.

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Despite her use of Instagram, owned by Facebook, Kerr says she "cannot STAND Facebook" and has been "appalled" at the features it has copied from Snapchat and her fiancé. "Can they not be innovative?" she said. "Do they have to steal all of my partner's ideas?"